要保证GIS数据的现势性必须实时进行（）
A.数据编辑
B.数据变换
C.数据更新
D.数据匹配
参考答案：C
“阳脉之海”是指
A．督脉B．冲脉C．任脉D．带脉E．阳跷脉
The little boy often makes his mother ______ him ______. [ ]
A. talk; something interesting
B. tell; something interesting
C. say; interesting something
D. speak; interesting something
